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1. 发明授权

US5847483A Pulse generator 失效
标题翻译：脉冲发生器
公开(公告)号：US5847483A
公开(公告)日：1998-12-08
申请号：US861066
申请日：1997-05-21
申请人： Yuzuru Suzuki , Sakae Fujitani , Kenichi Makino
发明人： Yuzuru Suzuki , Sakae Fujitani , Kenichi Makino
IPC分类号： H02K29/12 , H02K11/00 , H02K21/22 , H02K21/24 , H02K29/14 , H02K19/22 , H02K21/12
CPC分类号： H02K21/24 , H02K29/14
摘要： An index signal is used for assuring media for use in a floppy disk drive to be exchangeable with each other. While the signal is output once for each rotation of a spindle motor, since the signal generation is carried out in a non-contact manner with rotating members including the medium, a hole sensor or the like has been previously used. However, such a hole sensor is expensive and fragile under temperature and mechanical stress. A pulse generator has been proposed, in which the rotor magnet is provided with magnets having unequally allocated angles and disposed all along a circumference and a stator coil and is disposed so as to match with the rotor magnet to have a pulse generated once for each rotation. However, the generated signal has, been poor in its S/N characteristic. It is an object of the invention to overcome the difficulties and provide a pulse generator that is highly reliable and excellent in the S/N characteristic with the manner of allocation of angles for the rotor magnet improved. A rotor assembly having a permanent magnet with a plurality, i.e., M pieces, of magnetic poles of opposite polarities to each other alternately disposed in a circumferential direction and a stator assembly having a plurality of stator coils disposed in confronting and coaxial relationship with rotor assembly, at least one set of the magnetic poles are set to have equally allocated angles from the center of the shaft. The remaining magnetic poles are set to have unequally allocated angles. The stator coils electromagnetically match the rotor assembly only once for each rotation thereof and a very large pulse is generated. In addition, a waveform with a satisfactory S/N characteristic can be obtained.
摘要翻译：索引信号用于确保在软盘驱动器中使用的介质可以彼此更换。当主轴电动机的每次旋转输出一次信号时，由于信号产生以包括介质在内的旋转部件非接触的方式进行，所以已经预先使用了孔传感器等。然而，这种孔传感器在温度和机械应力下是昂贵且脆弱的。已经提出了一种脉冲发生器，其中转子磁体设置有具有不均等分配角度并且沿着圆周设置的磁体和定子线圈，并且被设置成与转子磁体匹配以具有每次旋转一次的脉冲。然而，所产生的信号的S / N特性差。本发明的一个目的是克服困难，提供一种高可靠性和优异的S / N特性的脉冲发生器，改善转子磁体角度分配方式。一种转子组件，其具有永磁体，该永磁体具有多个相互极性相反极性的M个磁极，它们在圆周方向上交替设置;以及定子组件，该定子组件具有多个与转子组件相对和共轴的定子线圈至少一组磁极被设置成具有从轴的中心相等的角度。剩下的磁极被设定为具有不相等的角度。定子线圈与转子组件电磁匹配，每转动一次，产生非常大的脉冲。此外，可以获得具有令人满意的S / N特性的波形。

2. 发明授权

US5777415A Two-phase unipolar drive type brushless DC motor 失效
标题翻译：两相单极驱动型无刷直流电机
公开(公告)号：US5777415A
公开(公告)日：1998-07-07
申请号：US810300
申请日：1997-03-03
申请人： Yuzuru Suzuki , Sakae Fujitani , Kenichi Makino
发明人： Yuzuru Suzuki , Sakae Fujitani , Kenichi Makino
IPC分类号： H02K29/00 , H02K1/27 , H02K21/22 , H02K29/06 , H02K29/14 , H02K21/12
CPC分类号： H02K29/06 , H02K1/2786 , H02K21/22 , H02K29/14
摘要： A two-phase unipolar drive type brushless DC motor has an armature including a stator yoke with salient poles around which coils are wound, and a rotor having a retainer with a rotor magnet which faces the armature at a predetermined small interval defined between the rotor magnet and the armature. The retainer is made of a polymeric material containing magnetic powder and formed integral with a rotor magnet. The rotor magnet is made of a highly efficient magnetic material or a rare earth magnetic material and consists of segment type permanent magnet pieces which are arranged circumferentially in the retainer. The motor is manufactured at a low cost and provides a stable magnetic wave form which can be used as a spindle motor in various kinds of memory apparatuses.
摘要翻译：一种两相单极驱动型无刷直流电动机具有一个电枢，该电枢包括一个定子线圈，该定子线圈具有缠绕线圈的凸极;以及转子，具有一转子磁体的保持器，该转子磁体以一定的小间隔面对电枢，转子磁体和电枢。保持器由含有磁粉的聚合材料制成，并与转子磁体形成一体。转子磁体由高效的磁性材料或稀土磁性材料制成，并且由周向设置在保持架中的段式永磁体片组成。电动机以低成本制造，并且提供稳定的磁波形式，其可以用作各种存储装置中的主轴电动机。

3. 发明授权

US06320288B1 Brushless DC motor 失效
标题翻译：无刷直流电机
公开(公告)号：US06320288B1
公开(公告)日：2001-11-20
申请号：US08609943
申请日：1996-02-29
申请人： Yuzuru Suzuki , Sakae Fujitani , Taketoshi Ohyashiki , Kenichi Makino
发明人： Yuzuru Suzuki , Sakae Fujitani , Taketoshi Ohyashiki , Kenichi Makino
IPC分类号： H02K1100
CPC分类号： H02K29/08
摘要： An optimum arrangement of position detectors which is inexpensive but hardly affected by intrinsic mechanical deflection or radial displacement on a rotary structure or motor and by a secondary artifact or variation i the magnetic coupling resulting from the mechanical deflection or radial displacement. A brushless DC motor with N phases (N≧2) according to the present invention is provided having position detectors of which signal outputs are indicative of the location of magnetic poles of a rotor and used for controlling the rotation for a constant speed. More particularly, it includes any two adjacent position detectors being spaced from each other by a spatial angle &thgr;i (rad) about the center of the rotor, (1/n)*(&thgr;i/2&pgr;)
摘要翻译：位置检测器的优化布置，其价格低廉但几乎不受旋转结构或电动机上的机械偏转或径向位移的影响，以及由机械偏转或径向位移引起的次级伪影或变化。本发明提供了具有N相（N> = 2）的无刷直流电动机，其具有位置检测器，其信号输出表示转子的磁极的位置，用于以恒定速度控制旋转。更具体地说，它包括任何两个邻近的位置检测器，它们相对于转子中心的空间角度（弧度）彼此间隔开，（1 / n）*（θ/ 2pi）

4. 发明授权

US06288507B1 Motor drive circuit 失效
标题翻译：电机驱动电路
公开(公告)号：US06288507B1
公开(公告)日：2001-09-11
申请号：US09421914
申请日：1999-10-20
申请人： Kenichi Makino , Yuzuru Suzuki , Sakae Fujitani
发明人： Kenichi Makino , Yuzuru Suzuki , Sakae Fujitani
IPC分类号： H02P122
CPC分类号： H02P7/29 , H02P7/04
摘要： A motor drive circuit is comprised of an H-bridge circuit which is formed of a flywheel diode and a switching device and connected to a motor coil; a current detecting circuit which is connected to the H-bridge circuit, has a plurality of shunt resistors, and computes a motor coil current value on the basis of voltage drops in the shunt resistors; a memory for storing an energizing direction of the motor coil and command value data regarding an energizing current waveform; a control circuit issues energizing current amount of the motor coil so that an error between command value data stored in the memory and a detected current signal detected by the current detecting circuit always stays zero; and a switching device driving logic circuit switches both source and sink of the H-bridge circuit when the motor coil is excited.
摘要翻译：电动机驱动电路包括由飞轮二极管和开关装置形成并连接到电动机线圈的H桥电路; 连接到H桥电路的电流检测电路具有多个分流电阻器，并且基于分流电阻器中的电压降来计算电动机线圈电流值; 用于存储电动机线圈的通电方向的存储器和关于通电电流波形的指令值数据; 控制电路发出电动机线圈的通电电流量，使得存储在存储器中的指令值数据与由电流检测电路检测到的检测到的电流信号之间的误差总是保持为零; 并且当电动机线圈被激励时，开关装置驱动逻辑电路切换H桥电路的源和汇。

5. 发明授权

US5801463A Dynamoelectric machine 失效
标题翻译：发电机
公开(公告)号：US5801463A
公开(公告)日：1998-09-01
申请号：US877490
申请日：1997-06-17
申请人： Yuzuru Suzuki , Sakae Fujitani , Kenichi Makino
发明人： Yuzuru Suzuki , Sakae Fujitani , Kenichi Makino
IPC分类号： H02K1/14 , H02K1/08 , H02K5/24 , H02K21/22 , H02K29/03 , H02K29/08 , H02K1/16
CPC分类号： H02K29/03 , H02K21/22
摘要： In a two-phase, half-wave drive brushless motor or other dynamoelectric machine, a cogging torque reduction effect can be achieved without any reduction in motor output by reducing the number of auxiliary slots on the main pole surface or auxiliary pole surface and the number of winding slots provided between the main poles and the auxiliary poles. A dynamoelectric machine, comprising: a permanent-magnet field portion having 2 n magnetic poles (where n is an even number); an armature core portion having 2 n main poles disposed facing each other at prescribed intervals in relation to the field portion, and 2 n auxiliary poles disposed between the main poles; and auxiliary slots provided on the surfaces of the main poles or auxiliary poles that face the field portion; wherein, assuming that nk (where k is an integer of 4 or greater) is the combined number of the winding slots provided between the main poles and auxiliary poles and of the auxiliary slots provided on the surfaces of the main poles or commutating poles, all the winding slots and auxiliary slots are divided into two groups of nk/2 slots each; the slots of the first group occupy positions .phi..sub.i that satisfy, in terms of electrical angle, the relation .phi..sub.i =(2.pi./k)i+2.pi.p (i=0, 1, 2, . . . , (nk/2)-1; p is an integer of 0.ltoreq.p.ltoreq.5 (n-1)); and the slots of the second group occupy positions .phi..sub.j that satisfy the relation .phi..sub.j =(2.pi./k)j+2.pi.q+.pi./k (j=0, 1, 2, . . . , (nk/2)-1; q is an integer of 0.ltoreq.q.ltoreq.(n-1)).
摘要翻译：在两相半波驱动无刷电动机或其他电动机中，通过减少主极面或辅助极面上的辅助槽的数量和数量，可以实现齿槽转矩降低效果，而不会降低电动机输出设置在主极和辅助极之间的卷绕槽。一种电动机，包括：具有2n个磁极（其中n是偶数）的永磁场部分; 具有相对于场部以规定间隔相对配置的2个n个主极的电枢铁芯部和设置在主极之间的2个n个辅助极; 以及辅助槽，其设置在与所述场部相对的所述主极或辅助杆的表面上; 其中，假设nk（其中k是4或更大的整数）是设置在主极和辅助极之间的绕组槽的组合数以及设置在主极或整流极的表面上的辅助槽的组合数量，所有绕组槽和辅助槽分别分成两组nk / 2槽; 第一组的时隙占据电气角度方面满足关系的位置phi i（2 pi / k）i + 2 pi p（i = 0,1,2，...，（nk / 2）-1; p是0的整数p = 5（n-1））; 并且第二组的时隙占据满足关系phi j =（2 pi / k）j + 2 pi q + pi / k（j = 0,1,2，...，（nk / 2））的位置phi j， -1; q是0的整数，q =（n-1））。

6. 发明授权

US5739614A Two-phase unipolar driving brushless DC motor 失效
标题翻译：两相单极驱动无刷直流电动机
公开(公告)号：US5739614A
公开(公告)日：1998-04-14
申请号：US814251
申请日：1997-03-11
申请人： Yuzuru Suzuki , Sakae Fujitani , Kenichi Makino
发明人： Yuzuru Suzuki , Sakae Fujitani , Kenichi Makino
IPC分类号： H02K1/10 , H02K1/14 , H02K21/22 , H02K29/03 , H02K29/08 , H02K23/24
CPC分类号： H02K21/22 , H02K1/146 , H02K29/03
摘要： A two-phase unipolar driving brushless DC motor of a radial gap type having a rotor position detector includes a main-pole yoke having main-poles, an interpole yoke coaxially provided with the main-pole yoke in a superposed manner and having interpoles and an axial short-circuit portion or member provided in an axially extending portion in magnetic fluxes formed in the main-poles and interpoles. This structure allows for easy winding of coils around the main-poles and enhanced winding space factor in order to increase the starting torque and to improve the motor efficiency.
摘要翻译：具有转子位置检测器的径向间隙型的双相单极驱动无刷直流电动机包括：具有主极的主极轭，具有与主极轭重叠的同极配置的间极，并具有间极和轴向短路部分或部件，其设置在形成在主极和间极中的磁通中的轴向延伸部分中。这种结构允许容易地缠绕在主极周围的线圈和增强的绕组空间系数，以便增加起动转矩并提高电机效率。

7. 发明授权

US5705871A Pulse generator having index angles formed by permanent magnet rotor 失效
标题翻译：具有由永磁转子形成的分度角的脉冲发生器
公开(公告)号：US5705871A
公开(公告)日：1998-01-06
申请号：US751815
申请日：1996-11-19
申请人： Yuzuru Suzuki , Sakae Fujitani , Kenichi Makino
发明人： Yuzuru Suzuki , Sakae Fujitani , Kenichi Makino
IPC分类号： H02K11/00 , G01D5/20 , G01D5/249 , H02K21/22 , H03K17/97 , H02K21/12
CPC分类号： G01D5/2492 , G01D5/2033 , H03K17/97
摘要： A pulse generator includes a rotor assembly which is formed by circularly arranged magnetic poles, and a stator assembly which is disposed coaxial with the rotor assembly and is formed by stator coils arranged circularly. Index angles defined by the circumferential ends of the magnetic poles are made unequal to each other. Pitches defined by angular intervals between adjacent stator coils are selected to allow the stator coils to electromagnetically match the corresponding magnet poles only once per revolution of the rotor assembly.
摘要翻译：脉冲发生器包括由圆形排列的磁极形成的转子组件和与转子组件同轴设置并由循环布置的定子线圈形成的定子组件。由磁极的圆周端限定的折角成彼此不相等。选择由相邻的定子线圈之间的角度间隔限定的间距，以允许定子线圈与转子组件每转一次电磁匹配相应的磁极。

8. 发明授权

US07049723B2 DC motor 失效
标题翻译：直流电机
公开(公告)号：US07049723B2
公开(公告)日：2006-05-23
申请号：US10046629
申请日：2002-01-14
申请人： Yuzuru Suzuki , Sakae Fujitani , Seiichi Matsuura
发明人： Yuzuru Suzuki , Sakae Fujitani , Seiichi Matsuura
IPC分类号： H02K1/27
CPC分类号： H02K29/03
摘要： The disclosure describes a DC motor including a rotor unit arranged within the motor body and has a cylindrical field magnet fixed to an outer surface of a holder. The holder has a rotating shaft press-fitted through the center, and the cylindrical field magnet has the S and the N poles alternately around a circumference. There is a stator unit which is circumferentially arranged around the rotor unit, that is made of a plurality of stator yokes that are arranged so that they oppose the field magnet through a small gap. Each of the stator yokes is formed by circumferentially stacking a large number of thin plates, each consisting of a salient pole, and a number of coil units, each formed by winding a magnet wire on a bobbin, and mounting the bobbins on the stator yokes. In the described arrangement, each of the S and N poles has a plurality of stages formed in an axial direction and shifted from each other in the circumferential direction by a predetermined shift amount with respect to the field magnet.
摘要翻译：本公开内容描述了一种DC电动机，其包括设置在电动机主体内的转子单元，并且具有固定到保持器的外表面的圆柱形场磁体。保持器具有通过中心压配合的旋转轴，圆柱形场磁体在周围交替地具有S和N极。在转子单元周围布置有定子单元，该定子单元由多个定子轭构成，该多个定子轭布置成使得它们通过小间隙与场磁体相对。每个定子磁轭是通过周向地堆叠多个薄板形成的，每个薄板由凸极和多个线圈单元组成，每个薄板通过将线圈缠绕在线轴上而形成，并将线轴安装在定子磁轭上。在上述结构中，S极和N极各自具有沿轴向形成的多个台阶，并且相对于场磁铁在圆周方向上彼此偏移预定的偏移量。

9. 发明申请

US20060044096A1 Electromagnetic actuator and composite electromagnetic actuator apparatus 失效
公开(公告)号：US20060044096A1
公开(公告)日：2006-03-02
申请号：US11211904
申请日：2005-08-25
申请人： Yuzuru Suzuki , Sakae Fujitani , Naoyuki Harada , Kunitake Matsushita
发明人： Yuzuru Suzuki , Sakae Fujitani , Naoyuki Harada , Kunitake Matsushita
IPC分类号： H01F7/08
CPC分类号： H01F7/1615 , H01F7/122
摘要： An electromagnetic actuator with high performance such as high speed and high resolution is inexpensively provided with solutions to problems associated with power supply and leakage flux, which have been involved in the structure of a moving coil type and have been shortcomings of a VCM type actuator. A composite electromagnetic actuator apparatus employs the foregoing electromagnetic actuator. The electromagnetic actuator is equipped with a stationary assembly that includes two coils disposed coaxially with each other inside a hollow stator yoke composed of a soft magnetic material, and a movable assembly composed of a movable magnet unit and a movable yoke unit both disposed inside the coils with a very small clearance therefrom so as to be movable in the axial direction, wherein the movable assembly travels in the axial direction by the interaction between a magnetic field generated by the movable magnet unit and a current passing through the coils.

10. 发明授权

US06856065B2 Electric rotary machine having positioning ring for securing salient poles in place 有权
标题翻译：电动旋转机具有定位环，用于将凸极固定到位
公开(公告)号：US06856065B2
公开(公告)日：2005-02-15
申请号：US10370971
申请日：2003-02-20
申请人： Yuzuru Suzuki , Seiichi Matsuura , Sakae Fujitani , Kazuo Muramatsu
发明人： Yuzuru Suzuki , Seiichi Matsuura , Sakae Fujitani , Kazuo Muramatsu
IPC分类号： H02K1/14 , H02K1/18 , H02K21/14 , H02K1/12 , H02K15/02
CPC分类号： H02K1/148 , H02K1/185
摘要： An electric rotary machine includes a stator comprising: a stator ring; a plurality of discrete salient poles each comprising a bobbin with guide grooves and a pole tooth with a groove, disposed inside the stator ring, and fixed by a molding resin injected inside the stator ring; and a positioning ring having protrusions at its outer circumference and engaging with the discrete salient poles such that the protrusions are each fitted into the groove of the pole tooth.
摘要翻译：一种电动旋转机械，包括定子，其包括：定子环; 多个离散的凸极，每个包括具有引导槽的线轴和具有槽的极齿，设置在定子环内部，并通过注射在定子环内部的模制树脂固定; 以及定位环，其外周具有突起并与离散的凸极接合，使得突起各自嵌入极齿的凹槽中。

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